Pith Number

pith:PCLSBN66

pith:2002:PCLSBN66VHICFQSM4ZQCUZK7FR

not attested not anchored not stored refs pending

Number and Amplitude of Limit Cycles emerging from {\it Topologically Equivalent} Perturbed Centers

Jose-Luis Lopez, Ricardo Lopez-Ruiz

arxiv:nlin/0210024 v1 · 2002-10-14 · nlin.PS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PCLSBN66VHICFQSM4ZQCUZK7FR}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:38:19.663961Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

789720b7dea9d022c24ce6602a655f2c7d0eec71dacd0f48910abf18762e17a2

Aliases

arxiv: nlin/0210024 · arxiv_version: nlin/0210024v1 · doi: 10.48550/arxiv.nlin/0210024 · pith_short_12: PCLSBN66VHIC · pith_short_16: PCLSBN66VHICFQSM · pith_short_8: PCLSBN66

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/PCLSBN66VHICFQSM4ZQCUZK7FR \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 789720b7dea9d022c24ce6602a655f2c7d0eec71dacd0f48910abf18762e17a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bfc35d1da4efeaecb3862c91b284794dd8aead1a4ac42386f4003448ccbebc1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "nlin.PS",
    "submitted_at": "2002-10-14T07:55:41Z",
    "title_canon_sha256": "2a1d568b32905152cc48d503432d1514bafab2c159ec844054a7a6dbf3555137"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nlin/0210024",
    "kind": "arxiv",
    "version": 1
  }
}